So I'm having a bit of a problem with my front brakes and I'm having questions about my rear wheel.
The thing with my front brakes is that it took me 2 days of getting, as far as I know, all the air out the system.
When I pump the lever I see the piston moving in and out, but not far enough, so it's not actually braking. I read something about a seal in the calliper that, if the groove is not perfectly smooth, that it's actually the seal that pulls the piston back. Could this be it?
I tried pumping the piston out without the brake pads but it's just moving back and forth.
I also noticed some air bubbles near the circlip of the master cylinder. Could this be a leak, or is this normal? It is a new piston kit with seals and everything.

The other problem, or challenge, I have is fitting the rear wheel. It just feels like my wheel is too wide for the swingarm. It is a 34L swingarm with a 1VJ wheel. I do have 2 different chain tensioners for the right side. Also from a 34L and 1VJ. The one from the 1VJ does fit a bit better but I have to swing it with a hammer to get it in place right. This is all without a chain fitted, does it get easier with a chain? Or am I just destroying my axle?

As to your problem with the front brakes, you will probably find that the dust seal, the smaller one at the front of the pair, is the culprit. They tend to roll over a little bit and pull the piston back more than it should. You could remove it completely and try it before buying a new seal set. I know it cured the same thing on many of my bikes in the past, especially Kawasaki's.

@jibber Thanks again for your help! I received my sprocket carrier from Germany today and everything fits like a glove now.

@stevep10 I will try that. Just to be certain, you mean the dust seal in the caliper right? What is the best way to remove the piston, because I cannot pump it out, and I don't want to damage the piston as it is a new one.

I finally got it out with an air compressor. The piston is unharmed but it seems that the seals are somehow damaged. Part of rubber has broken/ripped off or something. Does anybody know where to get new seals? I can only find a new piston repair kit with seals included

I've got new seals from my local bike store. Apparently suzuki uses the same seals in some of their bikes. I also installed a "new" master cylinder and everything works somewhat better now. But still not quite the way I want it. If I tighten the two bolts that hold the caliper in place the brake pads lock the front wheel. Even after I push the piston back in and re-attacht the caliper, it locks the wheel. All with a spongy brake lever. If I then loosen the two bolts a bit, after a few pumps I've got, what seems to be, good brake. The spongy feel is gone and the wheel turns smooth. But now I can unscrew the bolts with my hands. Has anyone had a similar problem or does anyone know what to do? I'm running out of ideas.